2221002220221 has 48 divisors (see below), whose sum is σ = 3325945896000. Its totient is φ = 1427086854144.

The previous prime is 2221002220201. The next prime is 2221002220273. The reversal of 2221002220221 is 1220222001222.

2221002220221 is a `hidden beast` number, since 2 + 221 + 0 + 0 + 2 + 220 + 221 = 666.

It is not a de Polignac number, because 2221002220221 - 2²³ = 2220993831613 is a prime.

It is a super-2 number, since 2×2221002220221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221002220194 and 2221002220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221002220201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20729430 + ... + 20836296.

It is an arithmetic number, because the mean of its divisors is an integer number (69290539500).

Almost surely, 2^{2221002220221} is an apocalyptic number.

It is an amenable number.

2221002220221 is a deficient number, since it is larger than the sum of its proper divisors (1104943675779).

2221002220221 is a wasteful number, since it uses less digits than its factorization.

2221002220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107498 (or 107495 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2221002220221 its reverse (1220222001222), we get a palindrome (3441224221443).

The spelling of 2221002220221 in words is "two trillion, two hundred twenty-one billion, two million, two hundred twenty thousand, two hundred twenty-one".